Telecommunication systems having primary and secondary ranks of matrices



June 25. 1968 J. A. LAWRENCE 3,390,236 TELBCOMMUNICATION SYSTEMS HAVING PRIIARY AND SECONDARY RANKS OF MATRICES Filed July 26, 1965 51 Sheets-Sheet. t

N M IN PUTS OUTPUTS =T'Xm N INPUTS Fl J l r y l l H4 OUTPUTS =rxm l I .1: I

Fl 2 Ja/m' 4- ANNE/f6! INveN-roe Ameruaw June 25. 1968 J A. LAWRENCE 3,390,236

TELECOMMUNICATEION SYSTEMS HAVING PRIMARY AND SECONDARY BANKS OF MATRICES Filid July 26, 1965 51 Sheets-Sheet 2 A SWITCH B SWITCH I I N INPUTS A SWITCH B SWITCH M 9 m OUTPUTS Fla. 3

A SWiTCH B SWITCH 1 I m=2o a j'w lo' M =9 8 2O 2 l2 m=2o 8 E0 FIG. 4

INvau-roe AT-rcrevoaw June 25, 1968 SECONDARY BANKS 0F MATRICES 51 Sheets-Sheet 8 Filed July 26, 1965 E 635 mmsz it m @N 053% $583 Q0 K W 556 NN v .So j. 8 T A W w m N M Till]; 11111111 1:5." LON? TV? EW: Q 5 m M 25 N E w: E n 8E A x A A x A x m Q5 we: 3v: ma: i A M N w: m: E m: 1 @T2 l x I x x t fic: ic: 35 8: m N: E o: E NTQA A x A x A x A x 8: t: E C -8 B w :m n A X 4 x m x A x NA S: MB 9: MS 9: N: :3 1 A m WS SO r KOEEES JT llllllllll mobfimm 858mm June 25. 1968 J. A. LAWRENCE 3,390,236

TELECOMMUNICATION SYSTEMS HAVING PRIMARY AND SECONDARY RANKS OF MATRICES Filed July 26, 1965 51 Sheets-Sheet 10 E LL] 92 u: LLJ C! E o a: Ll-

A r N NCOQ'LOQONOOG o a: umcncozmazmz c:

9 v v 1v v yv W B Q\ u g (9 2 :3 u r r E 9 u. u

c3 .0 of M2 2 s2 u u I i l l m Of.

v [VYVV wcowmwmaoo o o: nzczosoztxnzczoz a:

June 25. 1968 J. A- LAWRENCE 3,390,235

TELECOMMUNI-CATION SYSTEMS HAVING PRIMARY AND SECOXDARY RANKS OF MATRICES Filed July 26, 1965 51 Sheets-Sheet. 11

5 5 SWITCH H/MMM K7 '-5UV m3 I wig, L FIG.//.

INVENTOR Arm-cane June 25. 1968 J. A. LAWRENCE 3,390,236

TELBCOMMUNICATION SYSTEMS HAVING PRIMARY AND SECONDARY RANKS OF MATRICES Filed July 26, 1965 51 Sheets-Sheet 12 S R 23 24 25 i X X X REGISTER ACCESS SWITCH CROSSPO/NT FIG 32 Fla/2.

ll'l' u Jomv A LAW/75442 av fal /02% ATTOQN av LAWRENCE 3,390,236

SYSTEMS HAVING P AND BANKS OF MATRICE June 25. 1968 TELECQMMUNICAT SECO Sheets-Sheet 15 Filed July 26, 1965 iii INVEMTOE Jv/M/ A. LAW/YEMt BY FIG 72 FIG. /3.

A-r-roeruav J. A. LAWRENCE 3,390,236 TELECOMMUNICATION SYSTEMS VING PRIMARY AND SECONDARY BANKS O MATRICES Filed July 26, 1965 HA F June 25. 1968 51 Sheets-Sheet 11:

iifi

INVENTOIZ ATTORNEY June 25. 1968 J. A. WRENCE 3,390,236

TELEqouuumcA'rIoN TEMS HAVING PRIMARY AND SECONDARY BANKS OF MATRICES Filed July 26, 1965 51 Sheets-Sheet 15 van FIG/5.

Jo/f/V A-ZAa/REA C INVENTOR- ATTORNEY June 25. 1968 J. A. LAWRENCE 3,390,236

TELBCOMMUNICATION SYSTEMS HAVING PRIMARY AND SECONDARY BANKS OF MATRICES Filed July 26, 196 51 Sheets-Sheet. 16

INVENTOE ATTORNEY June 25. 1968 J. A. WRENCE'. 3,390,236

TELECOMMUNICATION TEMS HAVING PRIMARY AND SECONDARY RANKS OF MATRICES Filed July 26, 1965 51 Sheets-Sheet 17 x X k R K k.

FIG 12% 3J0 W i v i L- e i5 W \/0//fl I"ZAu I /G. INvEuToIa By 4m aw A-rrorznu EY Jun 2 1 J. A. LAWRENCE 3,390,236

TELECOMMUNICATION SYSTEMS HAVING PRIMARY AND SECONDARY RANKS OF MATRICES Filed July 26, 1965 51 Sheets-Sheet 18 I IG. \A/ /A. w/rave:

INVEMTOE BY 764/ zx A-r-rQQQEN June 25. 1968 J. A. LAWRENCE 3,390,236

TELECOMMUNICAT ON SYSTEMS HAV PRIMARY AND SECONDARY BANKS 0? MA CEs Filed July 26, 1965 51 Sheets-Sheet 19 a Fla. 9.

wvaw-roe ,v A iAu/nEn/ce A'T-roEuEv June 25. 1968 J, A. LAWRENCE 3,390,236

TELECOMMUNICATION SYSTEMS HAVING PRIMARY AND SECONDARY RANKS 0F MATRICES Filed July 26, 1965 51 Sheets-Sheet 2O Jo/M/ 4- LAWRENCE Iuvzww-oa Prr-rcrlan Ev 

1. A SWITCHING STAGE FOR A STEP-BY-STEP COMMUNICATION SYSTEM COMPRISING A PLURALITY OF FIRST RANK SWITCHES EACH HAVING A NUMBER OF INPUTS, A GREATER NUMBER OF OUTPUTS AND CONNECTION MEANS FOR CONNECTING INPUTS AND OUTPUTS, A PLURALITY OF SECOND RANK SWITCHES EACH HAVING A NUMBER OF INPUTS, A NUMBER OF OUTPUTS AND CONNECTION MEANS FOR CONNECTING INPUTS AND OUTPUTS, THE OUTPUTS OF THE FIRST TANK SWITCHES BEING DISTRIBUTED AMONGST AND LINKED TO THE INPUTS OF THE SECOND RANK SWITCHES, AND, ASSOCIATED WITH THE STAGE A REGISTER WHICH IS UNIQUE TO THE STAGE FOR RECEIVING INFORMATION RELATING TO A DESIRED CONNECTION TO BE SET UP FROM AN INPUT OF A FIRST RANK SWITCH OF THE STAGE TO AN OUTPUT OF A SECOND RANK SWITCH OF THE STAGE, AND, A SWITCHING STAGE CONTROL CIRCUIT CONNECTED TO THE REGISTER FOR OPERATING THE CONNECTION MEANS OF THE SWITCHES OF THE STAGE TO SET UP THE DESIRED CONNECTION. 